IRS
Here are some links to the IRS Website about 1099/Self-employed contractors:
Self Employed: https://www.irs.gov/businesses/small-businesses-self-employed/self-employed-individuals-tax-center
Gig Economy: https://www.irs.gov/businesses/gig-economy-tax-center
Home Office Deductions: https://www.irs.gov/businesses/small-businesses-self-employed/home-office-deduction
Free Templates
Budget: https://www.generalblue.com/templates/budget
Business Expenses: https://www.generalblue.com/templates/business-expense
Freelance Invoice: https://www.generalblue.com/templates/freelance-invoice
Planners (Daily/Weekly): https://www.generalblue.com/templates/planner